Scenario Upload error when attempting to update Default Issue From and Default Reciept To location

Hi,

Attempting to mass update the following fields as part of a initial implementation, but receiving the below error that the Warehouse Locations cannot be found, yet they are present in the Warehouse list.  I am new to Acumatica and learning as I am going, but wondering if there is something obvious that I am missing to cause the error.   

IMPORT SCENARIO:

ERROR:

Field: Default Issue From, Value: SS-07-R4-S4-B1 , Error: 'Default Issue From' cannot be found in the system. Field: Default Receipt To, Value: SS-07-R4-S4-B1 , Error: 'Default Receipt To' cannot be found in the system.